Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 573 [Rate centres in NPA 573] [Dial plan for NPA 573]

NXX: 923

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
573-923 A Bloomfield MO STLSMOWQDS2  093F ONVOY, LLC - MO 520      
573-923 0 Bloomfield MO   093F ONVOY, LLC - MO 520   2016-10-19   
573-923 1 Bloomfield MO   093F ONVOY, LLC - MO 520   2016-10-19   
573-923 2 Bloomfield MO   624H ONVOY SPECTRUM, LLC 520   2025-01-18   
573-923 4 Bloomfield MO   093F ONVOY, LLC - MO 520   2021-07-24   
573-923 8 Bloomfield MO   093F ONVOY, LLC - MO 520   2019-05-07   
573-923 9 Bloomfield MO   093F ONVOY, LLC - MO 520   2019-05-07   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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